The effect of graphite anti-oxidation coating above 1000 degrees
Wide application of graphite
The effect of graphite anti-oxidation coating is above 1000 degrees. Graphite is used as a conductive material: in the electrical industry, it is used to manufacture electrodes, brushes, carbon rods, carbon tubes, positive electrodes of mercury-positive flow devices, graphite gaskets, telephone parts, coatings for TV picture tubes, etc.
Graphite is used in wear-resistant lubricating materials: Graphite is often used as a lubricant in the machinery industry. Lubricating oil is often not usable under conditions of high speed, high temperature, and high pressure, while graphite wear-resistant materials can work at high sliding speeds at temperatures of -200~2000°C without lubricating oil.
Graphite is used for corrosion-resistant materials: Specially processed graphite has the characteristics of corrosion resistance, good thermal conductivity, and low permeability, and is widely used in the production of heat exchangers, reaction tanks, condensers, combustion towers, absorption towers, cooling appliances, heating devices, filters, pumps. Widely used in petrochemical, metallurgy, acid and alkali production, synthetic fiber, papermaking, and other industrial sectors, it can save a lot of metal materials.
Graphite is used in high-temperature metallurgical materials: due to its small thermal expansion coefficient, it can withstand changes in rapid cooling and rapid heating and can be used as a mold for glassware. After the use of graphite, ferrous metals can obtain castings with accurate dimensions, smooth surfaces, and high yields, which can be used without or with a little processing, thus saving a lot of metal.
Methods to prevent graphite oxidation
When graphite is used at room temperature, it can withstand rapid changes in temperature without damage. When the temperature changes suddenly, the volume of graphite does not change much, and no cracks will occur. However, when the temperature exceeds 400 degrees, a decarburized loose layer of more than 15 mm will appear on the graphite surface, resulting in oxidation, softening, and shedding at high temperatures. At this time, RLHY-305 graphite anti-oxidation coating is used, which can withstand bright grilling for a long time. The coating adopts inorganic nanotechnology and high-temperature-resistant ceramic materials to form a dense anti-oxidation coating, which can effectively prevent the diffusion of oxygen at high temperatures and has strong anti-rust and anti-corrosion, high temperature and oxidation resistance, anti-discoloration, wear resistance, and other characteristics.
Characteristics of graphite anti-oxidation coating
The oxygen diffusion coefficient of the coating is small, and the sealing performance of the graphite product surface coating is good. The coating has self-sealing and self-healing capabilities. Good high-temperature shrinkage properties. Good adhesion and thermal shock resistance can be established between the coating and the substrate. It is resistant to slag erosion and penetration, reduces inclusions in steel, and has a purifying effect on molten steel. In the temperature range from -20 ℃ to a high temperature of 1800 ℃, it can play an ideal anti-oxidation effect.
Graphite anti-oxidation coating application range
Graphite anti-oxidation coating is suitable for sealing the surface of graphite electrodes, graphite molds, graphite crucibles, graphite bearings, and other graphite products for anti-oxidation, sealing, and anti-corrosion, prolonging the life of graphite products by at least 30%, increasing the strength of the material, and the coating has no flash point and no combustion, Explosion hazard. Green and environmental protection, the paint composition uses water as the solvent, and the volatile organic compound (VOC) content is 0. It is an environmentally friendly water-based paint.